Think of Bitcoin as a fortress with guarded walls. The OP_RETURN limit is like the gate size—small, secure, easy to defend. Core wants to replace the gate with a big archway, letting in more people carrying banners, carts, weird sculptures, maybe even random mud. Knots and the watchers say: fine, but unless you build better roads, enforce guard checks, provide drainage, and ensure the foundations can handle the load, this archway might let in too much noise, water, and strain the walls (and maybe bring the fortress down for some of the smaller towers). Right?